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EODPattern.java
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EODPattern.java
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package rengar.checker.pattern;
import rengar.checker.util.RegexUtil;
import rengar.config.GlobalConfig;
import rengar.generator.StringGenerator;
import rengar.generator.path.Path;
import rengar.parser.ast.*;
import java.util.*;
public class EODPattern extends OneCountingPattern {
private final SequenceExpr prefix, postfix;
private final SequenceExpr branchP;
private final SequenceExpr branchQ;
public EODPattern(RegexExpr regexExpr, LoopExpr attackableExpr, LoopExpr upperLevelExpr,
SequenceExpr branchP, SequenceExpr branchQ,
SequenceExpr prefix, SequenceExpr postfix, int condition) {
super(regexExpr, attackableExpr, upperLevelExpr);
this.branchP = branchP;
this.branchQ = branchQ;
this.prefix = prefix;
this.postfix = postfix;
this.condition = condition;
}
@Override
public int hashCode() {
return super.hashCode() ^ branchP.hashCode() ^ branchQ.hashCode();
}
@Override
public boolean equals(Object o) {
if (!super.equals(o))
return false;
EODPattern pattern = (EODPattern) o;
return pattern.branchP.equals(this.branchP)
&& pattern.branchQ.equals(this.branchQ);
}
@Override
public String getType() {
return "EOLS";
}
@Override
protected int getMaxLength() {
return GlobalConfig.MaxYStringLengthForEOD;
}
@Override
protected List<Path> getPhi2Paths() {
Set<Path> paths = new HashSet<>();
// add branchP
int maxLength = getYLength(branchP);
paths.addAll(StringGenerator.gen(branchP,
RegexUtil.getMaxLoopTimes(branchP, maxLength),
maxLength,
true)
);
// add branchQ
maxLength = getYLength(branchQ);
paths.addAll(StringGenerator.gen(branchQ,
RegexUtil.getMaxLoopTimes(branchQ, maxLength),
maxLength,
true)
);
// add branchP + branchQ
SequenceExpr tmpExpr = new SequenceExpr();
tmpExpr.addAll(branchQ);
tmpExpr.addAll(branchP);
maxLength = getYLength(tmpExpr);
paths.addAll(StringGenerator.gen(
tmpExpr,
RegexUtil.getMaxLoopTimes(tmpExpr, maxLength),
maxLength,
true
));
// add branchQ + branchP
tmpExpr = new SequenceExpr();
tmpExpr.addAll(branchP);
tmpExpr.addAll(branchQ);
maxLength = getYLength(tmpExpr);
paths.addAll(StringGenerator.gen(
tmpExpr,
RegexUtil.getMaxLoopTimes(tmpExpr, maxLength),
maxLength,
true
));
// r1* & r2* & r
try {
CharRangeExpr anyExpr = new CharRangeExpr();
anyExpr.addRange(0, Character.MAX_CODE_POINT);
SequenceExpr r1star = new SequenceExpr();
r1star.add(anyExpr);
SequenceExpr r2star = new SequenceExpr();
r2star.add(anyExpr);
maxLength = Math.max(getYLength(r1star), getYLength(r2star));
maxLength = Math.max(maxLength, getYLength(attackableExpr));
Set<Path> path1List = StringGenerator.gen(
r1star,
RegexUtil.getMaxLoopTimes(r1star, maxLength),
maxLength,
true
);
Set<Path> path2List = StringGenerator.gen(
r2star,
RegexUtil.getMaxLoopTimes(r2star, maxLength),
maxLength,
true
);
Set<Path> path3List = StringGenerator.gen(
attackableExpr,
RegexUtil.getMaxLoopTimes(attackableExpr, maxLength),
maxLength,
true
);
Set<Path> tmpPaths = Path.intersect(path1List, path2List);
paths.addAll(Path.intersect(tmpPaths, path3List));
} catch (Exception | Error ignored) {}
if (prefix != null && postfix != null) {
Path prefixPath = StringGenerator.quickGen(prefix);
Path postfixPath = StringGenerator.quickGen(postfix);
Set<Path> results = new HashSet<>();
for (Path path : paths) {
Path tmp = new Path();
tmp.add(prefixPath);
tmp.add(path);
tmp.add(postfixPath);
results.add(tmp);
}
return results.stream().filter(path -> !path.isEmpty()).toList();
}
return paths.stream().filter(path -> !path.isEmpty()).toList();
}
}